Vibrator for molding-machines.



No. 827,127'. l PATENTE-D JULY s1, 19067. E. E. WAITB.

vVIBRATUR PQR MOLDING MACHINES,

APPLIOATIION FILED 0OT.11. 1906.

2 SHEETS-SHEET 2.

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`1 35 withdrawal of the housing :and vibrating means therefrom, and, fifth, to arrange thethe: attern carried bythe yonUsErrs. y

vrBRAToRQF-o MQLDING-MAc jNasamzv.

TaaZbwV/ om t may concern:-

vBe it known that. I, EDWIN E. WA1Ti i,a citizen ofthe United States, residingat the cityof Philadelphia, in the county of Philadelphia and State of Pennsylvania, 'have' in-4 vented certain new and useful Improvements iii-Vibrators for Molding-Machines, 'of which thefollowing -is a specification.

Mclinvention has relation to vibrators" for mol g-machines, andin such connection it relates more particularly to the construction and arrangement of the vibrator to vibrate a pattern-plate during the withdrawing of plate fromv the san of the mold.

The principal objects of my'invention are, irst, to provide the vibrator ywith `means which permit of :the-connection and disconnection of the vibrator with they pattern-- plate ofi` a molding-machine-fin which the plateis'raised andlOWered; second, to so arwith the pattern-plate that the time of engagement of the vibrator with the plate can be rextended and shortened at will;'third, toA provide the vibrator with a movable housing or hood which receives the vibrationof rotal y table means arranged therein to directly im,-

part the/same to the pattern-plate and which ood Vby vpartiallysurrounding thel vibrating means permits of a ready discharge of a mo-` tive .iu'id therefrom; fourth, to'providethe holder 'of thevibrator with means ,to limit thel movements ofthe housing of the vibra-tor therein and to permit of the read-y holder of the'vibrator adjustable, so as to ypermit of vthe engagement l,of 'the vibrator with pattern-plates of varying sizes. A

Thenature and scope of my invention will be more fully .understood from the following Figure lgis a verticalsectional 'view of a ymolding-machine and illustrating in side eledescription, taken in connection withthe accompanying drawings, forming part hereof, inwhich--m jvation the vibratorin engagement with the movable; pattern-plate of the machine, a holder carrying the vibrator',v and means connecting the holder With thefmachine embody# j ing mainfeatures of my finvention'. v Fig. 2 is 'a detail view,lenla`rged, illustratingatoothed Specification of Letters iatert'.

l secured to 'the ybracket ing inthe laIlgQS d: the, wheel @therein andbetweenthe-hub;p9rf

@pretreated-october11,1905. srinrofzsazioQ.

' .iwheel'y vrotatably arrangedl in ya?,` housing i hood sliding in the; holder 1,and partially sur- Ennwnv E.- WAITE, or PHILADELPHIA, PinnvsrLVArifiAQ-Assienon,V 'BY' rounding thegwheel, an ".inletj for a motive Huid, and an extension formed integral with `said housing, and means -adjustablysecured to the extension ofthe housing yadapted to ybe brought into and out ofengiagementwith the pattern-plate of the machine Fig;V 3 :islas top or planv view of Fig;A 2,-and Eig. 4 is a sectional view taken on the linel a: of Fig. Zfand illustrating in front elevation the means for slidably securing the `hood or housing carr ing the toothedwle'el in the holder and t e means fforflii'nit'ing1the movement of lthe d housing in one direction.

. -Referring to the drawings v withreferencelto Fig.v 1 of the'same,-;a represents amoldingmachine-,such as is described and claimedin,4

an'application filed by me underdate of June 20, 1905, SerialNo. 266,161,7cons'istingof a `standard a', in'whioh isslidably arranged-.a range the connecting means of the vibrator ffr ame a2, carrying a pattern-.plate a3'. From each side of the plate cl3-projects -a portionfof. a pattern or a gate of patterns a4,'and'inorder to bring eachportion of the pattern kinto an op erative position vthe pattern-plate c3. is

raisedand lowered by means of crank-'arms asecur'ed to a shafta?, to which are pivoti ally connected curved links, a7, engaging bolts a8 of the frame c2. By--the turning of the shaft a by a hand-lever (not shown) the pattern-plate ja? is raised 'and lowered bythe crank-arm a5 and links a7 and turned during it's upward movement by mechanism not shown. As' shown -in Eig. 1 to" the standard a/ of the molding-machine is secured ya bracket t, whiohserves as a support fora holder c,

throughslots c ofthe holder c, ,to render the holder c adjustableon the bracket The holder@ is slotted,vso'as to formv two extenl` sions c2 andlca, each'ofwhioh s provided with afgroovecq.-v These grooves serve as guida,l

v ways for a hoodl or housing d, which by means of-flanges d., engaging the grooves c6, is loosely vconnected therewith and hasarange' of movement therein. -Within the hood d is ar- .ranged in the present -instance artoothedfl Wheel e, which-by means of an opening ez-is` made lighterin one portion thereof. `1 Ashaft 3,'passing through the Wheel'e and terminatof thehoOd-d, Supports los tion e2 of the wheel e and the shaft e3 `is preferably arranged a roller-bearing e* to reduce the friction between the wheel and shaft. The hood d at its upper end is provided with a tubular extension d2, to which a flexible hose f may be attached, which connects the hood d with a suitable source of supply of compressed air or other motive fluid. (Not shown.) When compressed air enters the hood d through the tubular extension d2, the same is conducted against the toothed periphery of the wheel e and sets the same in rapid rotation. The air after having acted upon a comparatively short portion of the periphery of the wheel e is then discharged from the hood d at a point preferably above the central axis of the shaft e3, and thus by the quick discharge ofthe air a back pressure of the same, which tends to retard the rotation of the wheel e, is completely overcome. Owing to the uneven distribution of the weight of the wheel e, the same willvibrate when set in rotation, which vibrations by means of the shaft e3 are transmitted to the hood d. To the hood is thus imparted a reciprocating movement within the holder, which by means of an 'extension d3 is transmitted to a bolt g, engaging a bracket h, se-

' cured to the pattern-plate a3, as shown in Fig. 1. The pattern-plate is thus shaken or vibrated, and the upper portion of the pattern at, from which a mold has been made, is r sufficiently loosened from the sand of the mold to permit of the removal of the mold from the pattern-plate 0,3. However, the shaking lof the pattern-plate a3 takes place during the lowering of the same by the actuation of the shaft a, crank-arms a5, and links a7 by means' of ahand-lever, (not shown,) which lever also controls a valve (not shown) permitting the entrance of compressed air into the hood d. The pattern-plate a3 during its descent remains only for a certain time in engagement with the hood d, which length of time is determined by the length of the bolt g. As soonvas this bolt is brought out of engag'ement with the bracket h olf? the patternplate a3 the transmission of vibration to the plate by the hood d ceases, at which time a valve (not shown) controlling the entrance of compressed air into the hose f and hood d i's closed by means not shown. In order to increase or decrease the time in which the vibrations are transmitted to the pattern-plate c3, the bolt g is removably secured in the extension d3 of the hood d and can be replaced by a shorter or longer bolt g, which is locked to the extension by nuts g, as shown in Figs. 1, 2, and 3. Thus the period of time in which the pattern-plate a3 is shaken can be readily determined. As shown in Figs. 2, 3, and 4,

each of the extensions c2 and c3 of the holder c is provided with a bolt c4, which limits the range of movement of the hood d by engaging the ,flanges d thereof. By the removal of these bolts e4 the hood d and its wheel e can be readily disengaged from the holder c and replaced by another larger hood and wheel, if required. The movement of the hood d toward the slots c of the holder c is preferably limited by a portion c5 thereof, against which the hood d abuts, as shown in Fi 2. However, the arrangement of the hoo or housing d, its wheel e, and the holder c is such that the vibrations of the wheel are transmitted to the hood d, which by being loosely mounted in the holder c and permitted to reciprocate therein transmits the vibrations directly to the pattern-plate ai. Thus a loss in force of the vibrations is obviated by pree venting the same from being transmitted to the holder c, which by means of the bracket b is rigidly secured to the standard a of the molding-machine a. Furthermore, the com'- pressed air by being quickly discharged from the hood d, having been held in engagement with the wheel e for a time suiiicient only to spend its force thereon, eliminates the danger of a back pressure, which would be caused by confining the air in the housing or hood and providing an insufficient exit therefor. Thus another source of loss is overcome in the vibrator of my invention.

Having thus described the nature and objects of my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In a molding-machine, a holder, a hood or housing loosely mounted in said holder, rotatable means arranged in and partially surrounded by said hood, and means carried by said hood adapted to conduct motive fluid into the same to actuate said rotatable means and to produce by the rotation of the same a vibratory or reciprocating movement of the hood in said holder.

2. In a molding-machine, a holder, a hood or housing loosely mounted in said holder, rotatable means mounted in said hood, means carried by said hood adapted to conduct motive fluid into the same and against said rotatable means to reciprocate said hood in said holder and to produce independent of said holder the required shaking action by the movements of said hood.

3. In a molding-machine, a pattern-plate, a stationary holder, a hood or housing slid'- ably arranged in said holder, rotatable means arranged in said housing, means carried by said hood adapted to conduct motive fluid into the same and against said rotatable means and to connect said hood with said pattern-plate, and said hood adapted when actuated by said rotatable means to impart its shaking movement to said pattern-plate.

4. In a molding-machine, a pattern-plate, a stationary holder, a hood or housing slidably arranged in said holder, rotatable means arranged in said housing, means projecting from said hood adapted to conduct motive fluid into the same and against said rotatable IOO means and means to connect said hood With said pattern-plate, and saidhood adapted When actuated by said rotatable means to impart its shaking movements to said pattern-plate, and means carried by one of the 5. In a molding-machine, a movable pattern-plate, a stationary holder, a hood or housing s'lidably arranged in said holder, ro-

tatable means arranged in said housing, an

pattern-plate, and said bolt adapted to determine the duration of engagement of said hood with said movable pattern-plate.

6. In a molding-machine,a movable patrojeeting means of said hood adapted to imit the time of engagementof said hood With said pattern-platetern-plate, a stationary holder, a hood or.`

housing slidably arranged in said holder, rotatable means arranged in said housing, an inlet for motive iiuid and an extension carried by said hood, a bolt carried by the eX- tension of said hood adapted to-engage said pattern-plate, said rotatable means adapted When actuated by a jet as of com ressed air to impart a shaking action to sai hood and by the same, its extension and bolt to said pattern-plate, and said Abolt adapted to determineby' its length the duration of engagement of said hood with said movable patternplate, and means arranged in said stationary holder adapted to limit the reeiprocatory movement of said hood therein.

In testimony whereof I have hereunto set lmy signature in the presence of tWo subscribing Witnesses.

EDWIN E. WAITE.

Witnesses:

WILHELM VOGT, THoMAs M. SMITH 

